%0 Journal Article
%A Gruska, Jozef
%T On sets generated by context-free grammars
%J Kybernetika
%D 1966
%P -493
%V 02
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/KYB_1966__2_6_a1/
%G en
%F KYB_1966__2_6_a1